Molding-machine.



G. W. ROSS. MOLDING momma. APPLICATION FILED SEPT. 20, 1909.

Patented Jan. 18, 1930 2 SHEIETSSHEET l.

kaaz G, W. ROSS. MOLDING MACHINE.

APPLI ATION FILED SEPT.20, 1909.

Patented 53,21 18, 19.1.0.

To all whom it may concern;

insrrn SEA kS ljQSENT onnion.

GEORGE W. ROSS, OF CHICAGO, ILLINOIS, ASSIGNOR T RAILW'A 5. FOUNDRY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MOLDING-MACHINE.

adenine,

Specification of Letters Batent. Ejatgnted an. 18, 1910.

Application filed September 20, 1909. Serial No. 518,624.

Be it known that I. Gnonon W. Ross, a citizen of the United States of America, and'zfresident of Chicago, county of Cook, State of Illinois, have invented certain new and useful Improvements in Molding-Vlachines, of which the following a specification.

The main objects of this invention are .to

provide an improved form of mold for facilitating the operation of casting a large number of similar pieces and to provide an improved molding device of this character which is particularly adapted for molding railway journal-blesses. These objects are accomplished by the device shown in the companying drawings, in which:

Figure 1 is a top plan of a specific fol-in of molding machine embodying this invention, some of the molds being indicated with some of the parts removed. Fig. 2 is a side elevation, partly sectional, of'tlie same, but omitting the molds which are in the background. Fig. 3 is a top plan detail of one of the mold sections. Fig. 4 is a, sectionot'- the same on the line-l-l ofF ig. 3. Fig. 5 is a perspective view of a raill way p urnalbrass for the castingiof which the molds shown in the drawings are designed.

In the form shown in the drawings, the

machine comprises a base 1 in the. fOl'lllOf .a.

--i pedestal having an upright spindle 2 at the top, and a table 3 mounted to rotate on the spindle Z, and provided with a phiralitv of detachable bed plates 4 arranged m1 circle having its center in the axis of the spindle lvlountcd on each of the bed plates 4- is a core-5, which is provided with an integral bottom plate 6 and which is centered on the bed plate lby means of a spindle or bolt 7.

The molds comprise opposite matrices or moldsections 8, which fit together at their adjacent edges, and which are shaped at theirniiddle parts to slidably lit guide pieces or walls in the form of feathers 9 mounted on the core 5. In the torin shown, each core has a: pair of guide feathers 9 secured thereto at opposite sides and the feathers are of uniform rectangular cross-section and extend vertically throughout the height of the mold cavity. The matrices are so shaped to form molding cavities 10. In the form shown, the cavities 10 are shaped for casting railway journahbrasses, cat the shapeshoivn.

in Fi In Fi e 2 such brasses shown C: if; i

in position in the mold. The bolt or spindle 7 extends above the top of the core 5 and serves to center the top plate 12wh1ch closes the top of the mold. This plate is dividedinto two parts, each provided with a hole 13, through which holes metal may be poured into the cavities 10. The plates 12 and the corresponding mold sections 8 are detachably connected by dowel pins ll. As will be seen from Fig. 1, the-mold sections 8 are movable toward and away from each other, the movement being guided by the feathers -9, and the movement toward each other being limited by stop pins 14:, so as to properly center the mold sections 8 when the mold is closed.

()nc section 01": each mold is provided with a pair of'racks- 15, which arehorizontally disposed and secured at opposite sides. of said section. The other section is also provided with a pair of racks 16 which. are opposed to the respective racks 15. A pinion 17.is interposed between the racks at each side of the mold and the pinions are rigidly connected to the respective arms of a forked lever or bail 18, each bail being; provided with trunnions 19 which are journalcd in bearings 20 carried by brackets 21, socurcd to the bed plate 4. 'lhebails 18 are each provided with a handle by means of which they may be turned so as to cause the pinions 11' to rotate. The racks 15 and it are so disposed that the mold sections 8 will be drawn together when the bails exl a s tend toward the center of the machine, as In Fig. 2, and will be separated so as to permit lhc removal of the finished castings when the bails are swung so as to extend outward from the center of the table. The movement of the mold sections should of course be suflicient to shift them clear of any projecting parts on the, castings.

In the form shown in thodrawings, the

core, mold sections, and top and bottom I elaim:--

1. In a device of-the class described, the combination of a series of molds, means for moving said molds in succession along a-certain-path, each of said molds comprising a bottom plate, a core mounted on said bottom .plate', a top plate, and a pair of mold sections slid-ably mounted on said bottom plate and arranged to inclose said core to. provide one or more molding cavities between said mold sections and core, racks secured at 0pposite sides of each of said sections and the racks on one section being parallel with and opposed to those on the other, pinions interposed between said racks, and means for r0- tating said pinions for-shifting said mold sections together or apart.

2. A mold, comprising a bottom plate, a core extending upward from said plate, a top plate, a pair of mold sections slidably mounted on said bottom plate and fitting together so as to inclose said core and form one or more mold spzwesbctween said core and sections, racks secured to opposite sides 01 each of said mold sections and the racks on one section being opposed to those on the other, pinions interposed between said opposed racks, and a bail straddling said mold and rigidly connecting said pinions and adapted to rotate said pinions for shifting said mold sections toward or away from each other.

3. A mold, comprising a bottom core extending upward therefrom, mold sections slidably mounted on said bottom plate I and fitting together so as to inclose said core to form one or more mold spaces between said core and sections, means on said core.

for guiding the movement of said sections, and mechanism for moving said-sections to ward and away from each other.

/A mold, comprising a bottom plate, a core extending upward therefrom, a pair of mold sections slidably mounted on said hotplate, a-

i for said trunnions.

eseyree tom plate and fitting together so as toin close said core to form one or more moi spaces between said core and sections, trai verse guide tongues extending in opposite directions from said core and intertitting with said mold sections for guiding the same, a pair of racks on each of said mold sections disposed in parallel relation to the direction of the movement of said sections, the racks on one of said sections being opposed to those on the other, pinions interposed be tween the opposed racks, a bail -straddling said mold sections, and rigidly connecting said pinions and adapted to-rotate said pinions for shifting said sections toward and away from each other. I

5. A mold, comprising a bottom plate, a core extending upward ther'from, a pair of mold sections slidably mounted on said bot.- tom plateand fitting together so as to inclose said core to form one or more mold 65 spaces between said core and sections, transverse guide tongues extending in opposite directions from said core and interlitting withsaid mold sections for guiding the same, a pair of racks on each of said mold sections disposed in parallel relation to the direction of the movement of said sections, the racks on one of said sections being opposed to those on the other, pinions interposed between the opposed racks, a bail straddling said mold sections, andrigidly connecting said pi nions and adapted to rotate saidbinion's =ior shift in' said sections toward an away from each 0t er, trunnions on said bails in axial alinement with said pinions, and fixed hearings on GEGRGE W. RG38.

this 17th day of Witnesses:

WILLIAIii W. SMYTH, PATRICK H. Mounties 

